upthrust
noun
- an upward push or thrust
- Geol. an upheaval of a part of the earth's crust
See upthrust in American Heritage Dictionary 4
(ŭpˈthrŭstˌ)
noun An upward thrust, especially of part of the earth's crust.
tr. & intr.v. up·thrust·ed,
up·thrust·ing,
up·thrusts To thrust or be thrusted upward. Used especially of the earth's crust.
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